8-bit AVR RISC-based microcontroller running at 16 MHz
About 2/3 the size of the OSEPP™ Uno board
Flexible power source (lithium polymer battery or DC power)
ICSP header for programming microcontroller
Compatible with existing Arduino software libraries
Compatible with the Ethernet and Motor Controller Shields
The ATmega328P comes with the Arduino bootloader preloaded. Should you wish to update and/or replace the bootloader, there are ICSP (In-Circuit Serial Programming) pin-outs that can be used in combination with a header (sold separately) for the ATmega328P.
The board comes with a resettable polyfuse on the power source. The fuse will trip when the current exceeds 500 mA on the input.